Nate Campi writes:
>
> One option is to use stateful filtering so that connections that
> originate from those source ports are allowed. If your firewall is
> debian you can do this by using a 2.4 kernel and iptables.
No, this isn't an option, since the firewall is on the router
and is not so sofisticated.
So, what do people do in general, if they apply the policy
that by default all ports are closed (as is often recommended)?
-Igor Mozetic